Three patches

[Robert Helling]

Hi,

here are three more patches.



0001 fixes a crash when the dive does not yet have a divesite and one loads images with geolocation data. I am not 100% sure this dive-site is properly added, but at least it fixes the crash.

0002 corrects a wrong signature of a helper function (call by value)

0003 adds the possibility to have URLs in image filenames. If loading an image by filename and by hash fails, we try to interpret the filename as URL and download the image file to a local cache directory (N.B. also QStandardPaths::standardLocations(QStandardPaths::CacheLocation) seems to give a non-existant directory on my mac that needs to be created for this to work) and then hashes treats the file as local with a hash. So far, the only possibility to have such URL filenames is by editing the xml. dives/test39.xml is added which contains such a filename.

Best
Robert

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Robert C. Helling     Elite Master Course Theoretical and Mathematical Physics
                      Scientific Coordinator
                      Ludwig Maximilians Universitaet Muenchen, Dept. Physik
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